Update changelog.

Author: noplanman

CHANGELOG.md

@@ -4,8 +4,11 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 Exclamation symbols (:exclamation:) note something of importance e.g. breaking changes. Click them to learn more.
 
 ## [Unreleased]
+:exclamation: After updating to this version, you will need to execute the [SQL migration script][unreleased-sql-migration] on your database.
 ### Added
+- Bot API 4.0 (without Passport)
 ### Changed
+- [:exclamation:][unreleased-bc-move-animation-out-of-games-namespace] Move Animation entity out of Games namespace.
 ### Deprecated
 ### Removed
 ### Fixed
@@ -213,6 +216,8 @@ Exclamation symbols (:exclamation:) note something of importance e.g. breaking c
 ### Deprecated
 - Move `hideKeyboard` to `removeKeyboard`.
 
+[unreleased-sql-migration]: https://github.com/php-telegram-bot/core/tree/master/utils/db-schema-update/0.54.0-unreleased.sql
+[unreleased-bc-move-animation-out-of-games-namespace]: https://github.com/php-telegram-bot/core/wiki/Breaking-backwards-compatibility#move-animation-out-of-games-namespace
 [0.54.0-sql-migration]: https://github.com/php-telegram-bot/core/tree/master/utils/db-schema-update/0.53.0-0.54.0.sql
 [0.54.0-bc-rename-constants]: https://github.com/php-telegram-bot/core/wiki/Breaking-backwards-compatibility#rename-constants
 [0.53.0-sql-migration]: https://github.com/php-telegram-bot/core/tree/master/utils/db-schema-update/0.52.0-0.53.0.sql